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@ARTICLE{Channa:893107,
      author       = {Channa, Iftikhar Ahmed and Distler, Andreas and Scharfe,
                      Benedikt and Feroze, Sarmad and Forberich, Karen and
                      Lipovsek, Benjamin and Brabec, Christoph and Egelhaaf,
                      Hans-Joachim},
      title        = {{S}olution processed oxygen and moisture barrier based on
                      glass flakes for encapsulation of {O}rganic ({O}pto-)
                      {E}lectronic {D}evices},
      journal      = {Flexible and printed electronics},
      volume       = {6(2)},
      issn         = {2058-8585},
      address      = {Philadelphia, PA},
      publisher    = {IOP Publishing},
      reportid     = {FZJ-2021-02565},
      pages        = {25006},
      year         = {2021},
      abstract     = {The concept of transparent barriers against oxygen and
                      water based on polymer films filled with glass flakes is
                      presented. Barriers are prepared by casting PVB films
                      containing glass flakes of different aspect ratios at
                      different loadings to systematically study the effect of
                      these parameters on barrier quality and optical
                      transmission. It is found that the glass flakes are
                      distributed homogeneously in the PVB film, with an almost
                      perfect orientation of the long axes of the platelets
                      parallel to the film surface. For glass flakes having an
                      aspect ratio of 2000, barrier films with optical
                      transmittance exceeding $85\%$ and water vapor transmission
                      rates of 0.14 g.m-2.day-1 are obtained at a glass loading of
                      25 $vol\%.$ The haze of the glass flake filled PVB films,
                      which is mainly due to surface roughness of the films
                      according to optical simulations, is reduced by coating a
                      smoothing layer on top. The barrier properties persist even
                      after 20,000 cycles of bending at a radius of 3 cm. The
                      lifetime of organic solar cells (OSCs) increases to beyond
                      1000 h under damp heat conditions as well as under constant
                      illumination, when the devices are encapsulated with the
                      PVB/glass flake composite films.},
      cin          = {IEK-11},
      ddc          = {621.3},
      cid          = {I:(DE-Juel1)IEK-11-20140314},
      pnm          = {121 - Solar cells of the next generation (POF3-121)},
      pid          = {G:(DE-HGF)POF3-121},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000661639900001},
      doi          = {10.1088/2058-8585/ac0716},
      url          = {https://juser.fz-juelich.de/record/893107},
}